Please fix the e-mail notification function in panda office protection cloud. Your smtp handling is totally wrong and against any rfc rules:
Code: Select all
Mar 6 08:51:10 192.168.1.201 postfix/smtpd[8858]: NOQUEUE: reject: RCPT from mail.MYCLIENT.com[XXX.XXX.XXX.XXX]: 504 5.5.2 <server-01>: Helo command rejected: need fully-qualified hostname; from=<server-01@pandasecurity.com> to=<support@XXXXX.ch> proto=ESMTP helo=<server-01>
mail.MYCLIENT.com[XXX.XXX.XXX.XXX] is our client with panda office protection installed. You need to fix the helo command in your mail function/library, as example like this:
“helo pandasecurity.com”